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Warnings (for using R290 refrigerant only)
14. Decommissioning
Before carrying out this procedure, it is essential that the technician
is completely familiar with the equipment and all its detail. It is
recommended good practice that all refrigerants are recovered
safely. Prior to the task being carried out, an oil and refrigerant
sample shall be taken in case analysis is required prior to re-use of
reclaimed refrigerant. It is essential that electrical power is available
before the task is commenced.
a. Become familiar with the equipment and its operation.
b. Isolate system electrically.
c. Before attempting the procedure ensure that:
Mechanical handling equipment is available, if required,
for handling refrigerant cylinders;
All personal protective equipment is available and being used
correctly; The recovery process is supervised at all times by a
competent person;
Recovery equipment and cylinders conform to the appropriate
standards.
d. Pump down refrigerant system, if possible.
e. If a vacuum is not possible, make a manifold so that refrigerant can
be removed from various parts of the system.
f. Make sure that cylinder is situated on the scales before recovery
takes place.
g. Start the recovery machine and operate in accordance with
manufacturer's instructions.
h. Do not overfill cylinders. (No more than 80 % volume liquid charge).
Local air conditioner / Instruction Manual
20
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